php仿ZOL分页类代码

代码如下:
<?php

/**
* 功能:分页类
* 作者:phpox
* 时间:Sat Jul 14 18:15:02 CST 2007
*/

defined('PHPOX') or die(header("HTTP/1.1 403 Not Forbidden"));

class page{
public $infocount;
public $pagecount;
public $items;
public $pageno;
public $start;
public $next;
public $prev;
public $maxpages;

public function __construct($infocount,$items,$pageno){
$this->infocount = $infocount;
$this->items = $items;
$this->pageno = $pageno;
$this->pagecount = $this->getpagecount();
$this->justpageno();
$this->start = $this->getstart();
$this->gotoprev();
$this->gotonext();
}

private function justpageno(){
if (emptyempty($this->pageno) || $this->pageno < 1){
$this->pageno = 1;
}
if ($this->pageno > $this->pagecount){
$this->pageno = $this->pagecount;
}
}

private function gotonext(){
$next = $this->pageno + 1;
if ($next > $this->pagecount){
$this->next = $this->pagecount;
}else {
$this->next = $next;
}

}

private function gotoprev(){
$prev = $this->pageno -1;
if ($prev < 1){
$this->prev = 1;
}else {
$this->prev = $prev;
}
}

private function getpagecount(){
return ceil($this->infocount / $this->items);
}

private function getstart(){
if ($this->pageno <= 1){
return 0;
}else {
return ($this->pageno - 1) * $this->items;
}
}

/**
* 样式0(php)
*/
public function showpage($ctlname,$actname,$args = null){
if ($args !== null){
if (is_array($args)){
$str = '&'.encode_url_args($args);
}
}
$out = '';
$out .= "每页显示{$this->items}条信息 ";
$out .= "当前页<strong><font color=/"#FF0000/">{$this->pageno}</font>/{$this->pagecount}</strong> ";
$out .= "共有{$this->infocount}条信息 ";
$out .= "<a href='?ctl={$ctlname}&act={$actname}&p=1$str'>首页</a> ";
$out .= "<a href='?ctl={$ctlname}&act={$actname}&p={$this->prev}$str'>上一页</a> ";
$out .= "<a href='?ctl={$ctlname}&act={$actname}&p={$this->next}$str'>下一页</a> ";
$out .= "<a href='?ctl={$ctlname}&act={$actname}&p={$this->pagecount}$str'>尾页</a> ";